Spark-arrester



A. E. HUDSON. SPARK ARRESTER.

APPLICATION FILED OCT. 13. I919.

Patented July 20, 1920.

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INVENTOR ALBERT. EHUDSUN.

ATT YS f UNITED STATES PATENT OFFICE.

SPARK-ARRESTER.

Specif cation of Letters Patent.

Patented July 20, 1920.

gppl ication filed October 13, 1919. Serial No. 330,191.

To all whom it mag concern: j

Be it known that I, ALBERT EDMUND HUD- soN, a subject of the King of Great Britain, and a resident of the city of Calgary, in the Province 7 of Alberta, .in the Dominion of Canada, have invented certain new and useful improvements in Spark-Arresters, of

. which the following is a specification. I

This invention relates to improvements in spark arresters' and fuel savers of that type particularly designed for use on locomotives, and the ,obje'cts of the invention are to insert in the path of travel of the products of combustion a plurality of baflies which will extinguish sparks and arrest the same, and in this way assist in eliminating the danger of forest fires so common in some provinces wherein the timber or lumber becomes ignited from sparks emitted from passing trains. 7

Further objects are to permit of the spark arrester being formed sectional so that each section may be bodily removed as single unit for cleaning purposes or inspection and repair, and to so standardize the sections that they are readily fitted and interchangeable on standard locomotives at present in use with a minimum of time and labor.

Further objects still are to provide more room in the smoke box so that the spark arrester can be more readily positioned and removed when such is found necessary, and generally to adapt the several parts to better perform the functions required of them.

\Vith the above and other objects in view the invention consists essentially of the improved constructions particularly described and set forth in the following specification and accompanying drawings forming part of the same.

In the drawings:

Figure 1 is a fragmentary longitudinal section of a locomotive boiler showing my improved spark arrester and extinguisher mounted in the smoke box.

Fig. 2 is a front view of the interior of cated behind the smoke stack 12, and the lower end of the dead plate is formed with a horizontal portion 13 which terminates at the front end in a downwardly extending flange 14, the said flange being spaced from the lowerpart of the smoke box.

The exhaust pipe 15 from the engine cylinders passes through the smoke box and has its upper end extending through the horizontal portions 13 of the dead plate 10, and above exhaust pipe and in alinement therewith are apair'ofpetticoat pipes 16 and 17, which are spaced from each other and from the exhaust pipe for an object which will be made clear hereafter.

Operatively supported from the horizontal portion 13 of the dead plate 10 and adjacent to the flange 141 is the spark arrester B.

This spark arrester B consists of a plurality of sections 19 each of box-like formation, being rectangular in cross section, and in the embodiment illustrated the sections are of a size sufficient to clear the smoke box door.

Each section 19 is provided with a plurality of baffle walls 21 extending transversely across the sections 19, the baffle walls 21 being formed of wire mesh, or perforated steel plate, each bafiie wall being corrugated a'ndspaced from the other, forming thereby a tortuous passageway through which the products of combustion must pass before being delivered to the up-take 12.

he baffle walls 21 are embraced between corrugated plates 22 located at the front and rear of each section 19, the plates 22 being formed with very line perforations which, while permitting gases to enter the space between the plates 22 and the front and rear walls of the sections 19, will prevent spar {s from lodging in this space. It will thus be clear that sparks cannot collect and smoulder and burn the plates on the corrugations of the plates 22.

Each section 19 is formed on the back wall with a flange 23 engaging with the upper face of the horizontal portion 13 of the dead plate, and a clamp 24 is carried by the dead plate to coact with the said flange to hold the sections of the spark arrester and extinguisher in position.

The front of each section of the spark arresteris formed with a downward depending flange 25 which engages with the rod 26 which extends across the smoke box, and the flange 25 is secured to the rod 26 by means of thumb nuts and bolt 27.

Each section 19 of the spark arreste r is open at the top'fand bottom allowing .thefree passage of the products of combustion through the said sections, and as the prod-- ucts of combustion travel through the sections, the sparks Will be deflected back- Wardly and forwardly by the battles and so extinguished. Any fine pieces of fuel carried in suspension by the products of combustion after leaving the upper end of the sections 19 Will have been extinguished by thebalile Walls 21, so thatthe smoke and products of combustion delivered to the smoke stack 19 Will be free of sparks, etc.

The sections 19 are very quickly assembled in position and may be-each bodily, removed by undoing the thumb nutand bolt 27, and by unloosening the clamp 24:, so that any broken parts may be quickly repaired 'With 1 a minimum of time andlaborL By forming the spark arrester in this Way more clear space is obtained in the smoke box than With other forms of spark arresters in use.

As many changes could be made in the above construction and many apparently Widely different embodiments of my invention, Within the scope of the claim, constructed Without departing from the spirit or scope thereoiit is intended that all nat- ;te r contained in the accompanying drawings, shall be interpreted asillustrative and not in a limiting sense. 7 I

NVhat I claim as my invention s: v A spark arrester and extinguisher 'ofthe class described, comprising a removable sec tion of box-likeformation open at the top and bottom, a plurality of cor'rugated,baffie Walls in the section, anda pair of cor- 1 

